My son bought a laptop from currys last yr with Windows 8 installed. Now is full of Crap and wants to wipe it ans start a fresh. But when weve looked there is no windows sticker anywhere and when ive gone into system info it gives me the last 4 digits of the code but the rest are astriked out so cant seem to use it.

Anyway how to find out whatthe full code is so we can wipe his laptop?